Power take-off for motor vehicles



May 16, 1939. Q 'P TE N 2,158,483

POWER TAKE-OFF FOR MOTOR VEHICLES Filed June 50, 1937 g IFHZIiLOR. B"

ATTORNEYS I 10 The invention consists in the novel features and tending bearing support or tower 8.-

Patentecl May 16, 1939 Y .UNITED STATES PATENT OFFICE 2,158,483 rowan TAKE-OFF roa Moron VEHICLES Carl D. Peterson, Toledo, Ohio, assignor to Spicer Manufacturing Corporation, Toledo, Ohio, a corporation of Virginia Application June 30, 1937, Serial No. 151,256

1 Claim. (Cl. 74-11) This invention relates to power take-offs for shaft 2 is journalled in suitable spaced apart motor vehicles and has for its objecta particubearings and 6 in the rear wall of the box 4 larly simple, compact, durable and efficient power in end to end relation, or in axial alinement with take-off by which the vehicle may be operated the shaft I and is provided at its outer end with 6 through all the various speed changes of a transsuitable means for coupling to a propeller shaft 5 mission gear without using the power take-off, or or to a universal joint. through the various gear changes with the power The box 4 is open on one of its lateral sides take-off in operation, or when the vehicle is at a. and this opening is generally closed by a cover standstill with only the power take-off running. I. The cover is formed with an outwardly exin the combinations and constructions herein- 9 designates the power take-off shaft jourafter set forth and claimed. nalled in spaced apart bearings I0 and II in the In describing this invention, reference is had bearing support or tower 8 and extending beyond to the accompanying drawing which is a transthe outer end of the same for coupling to any verse sectional view through the drive mechanism motion'transmitting mechanism to receive power 1 embodying this invention, of a motor vehicle with from the shaft 9. the adjacent portion of the change speed gear I2 is a bevel gear suitably mounted on the inbox being also shown. ner end of the power take-off shaft 9 within the In the illustrated embodiment of the invention, box 4. I3 is a bevel gear, this being concentric the power take-off is shown as attached to the with the shaft I to normally rotate relative to rear end of the gearbox, but it is understood that the shaft or permit the shaft to rotate relatively it may be otherwise mounted or mounted indeto the gear. The gear II is here shown as keyed pendently of the gear box, that is, spaced from at It to a sleeve I5 on the shaft I, suitable antithe gear box with a shaft between them. friction bearings I6 being interposed between the 25 The pow r k -0 comprises generally adrive shaft I and the sleeve I5. The sleeve is ro- 25 shaft which is a sha t tu e y the engine of vided with clutch teeth I'I. I8 is a ring or sleeve the vehicle, a driven shaft alined with the drive ted n the inner end of the shaft I and shaft ,and connected to the driving wheels of the abutting against the end of the sleeve [1, this, otor ve c usually through the usual D being keyed or splined or otherwise secured to the 0 seller shaft n universal joint, n hown, n shaft 5 at l9 to rotate therewith and having so a p w r k including s r one f wh h is clutch teeth 20 located to come in alinement with mounted concentric with the drive shaft and north t th [1, 2| ar t l d t h t t mally unclutched therefrom, so that the drive vided on a head at the inner end of the driven shaft m y r t e r v ly to h e r, and a shaft 2. The sleeve I5 abuts at one end against clutch including a shiftable section operable into the ring I8 which is held from axial displacement at; three positions: (a) to clutch only the driving in any suitable manner, as by a retaining or look and driven shafts directly together for the purring 22. The sleeve I5 thrust at its other end pose of driving the vehicle; (b) to clutch the against a lock washer or ring 23 thrusting against drive and driven shafts directly together and also the inner ring 24 of an oil tight hearing, which clutch the gear to rotate with the drive shaft so in turn thrusts against the bearing for the shaft 40 that the power take-off may be used, while the I, the latter being suitably held from axial disvehicle is in operation; and (0) into a position placement. The gear I3 thrusts against the ends wherein the drive and driven shafts are un-' of the clutch teeth on the sleeve I5 and against clutched and the gear only clutched to rotate a lock nut 25 on the sleeve I5.

with the drive shaft, so that only the power take- 26 designates a shiftable clutch section slid- 45 off is in operation, when the vehicle is idle. ably splined on the ring I8 or having internal I and 2 designate respectively the drive and the teeth complemental to the clutch teeth 20 of the driven shafts, the drive shaft being in the illusring I8, the clutch section being shiftable into trated embodiment of my invention the output three positions, in one position, to the right, desor transmission shaft of a change speed transmisignated (a) so that it clutches only the ring I8, 50 sion gearing located in a gear box. 3 designates and hence the shaft I to the driven shaft 2, or in the rear wall of the gear box. The shaft Iis such position that the clutch teeth or splines of journalled in suitable bearings in the gear box the clutch section 26 engage only with the teeth and extends through the same into a. box 4 en- 20 of the ring I8, and the teeth 2I of the shaft closing the power take-off mechanism. The drive 2; and into another position, that shown in the 55 r drawing and designated (b) in which the clutch teeth of the shiftable section 26 are engaged with both the clutch teeth of the ring l8 and the clutch teeth 2| of the shaft 2 and into a third position designated (0) in which the clutch teeth of the section 25 are interlocked with those of the ring l8 and the teeth I! of the sleeve I5, which sleeve is keyed to the bevel gear II. The clutch section 26 is shifted in any suitable manner, it being provided with a groove for receiving a fork which is actuated in any well-known manner, as by a shifting lever.

The opening, closed by the cover I, is 01' sufllcient diameter to permit the bevel gear I! to pass therethrough or to permit this gear to be lifted out, when the cover is removed.

In operation, when driving the vehicle along normally with the power take-oft disconnected, the shiftable section 26 is shifted from the right into the position shown in the drawing, and when it is desired to both drive the vehicle and the power take-off, the clutch section 26 is shifted into intermediate position, shown in the drawing, and when the power take-01f is to be used when the vehicle is standing still, the shiftable section is shifted completely to the left in the dotted line position 0.

What I claim is:

In a power take-oi! for motor vehicles, the

combination of a drive shaft actuated from the engine of the vehicle, a driven shaft alined therewith for connection to the propeller shaft of the vehicle, a power take-ofl? including a train of gears and a shiftable clutch section operable to connect the gears to the drive shaft, a sleeve on the drive shaft in which the drive shaft is normally rotatable, the. sleeve being formed with clutch teeth at one end, a ring keyed to the drive shaft against which said end of the former sleeve thrusts, the ring being formed with clutch teeth, the driven shaft being formed at its end opposed to the drive shaft with clutch teeth, one of said train of gears being mounted on the sleeve and keyed thereto, and suitable means for holding the sleeve and the gear on the sleeve from axial displacement, said shiftable clutch section having teeth for interlocking with said three sets of clutch teeth and shiftable into one position to clutch the drive and driven shafts through said ring directly together; and into a second position to clutch the sleeve through the clutch teeth thereon to the drive shaft through said ring and the driven shaft to the drive shaft through said ring; and into a third position to clutch only the gear on the sleeve to the drive shaft through the ring.

CARL D. PETERSON. 

